Can a 300-Cell Header Pass Annual Vehicle Inspection?
2 Answers
300-cell headers can pass the annual vehicle inspection. Below are the relevant details: 1. Overview: The 300-cell catalytic converter has larger pores, and its pore size is the most reasonable parameter, ensuring both compliance with annual inspection requirements and a necessary degree of improvement in vehicle power. 2. Additional Information: The three-way catalytic converter is a crucial exhaust treatment device in automobiles, with at least one installed to process exhaust gases. Its primary function is to convert three harmful substances in vehicle exhaust—CO, HC, and NOx—into non-toxic, non-polluting gases such as CO, H2O, and N2. Additionally, there is a cylindrical device inside which contains a purifying agent made of a substrate and catalyst, effectively purifying gases as they pass through the cylindrical device.
Bro, whether a 300-cell catalytic converter can pass annual inspection really depends! Although it's much cleaner than a straight pipe and retains catalytic conversion capability, modifications are still modifications. The key is the emissions test: if your engine is in good condition, combustion is efficient, and catalytic efficiency meets standards, passing is possible if the data is up to par. However, some areas are strict—inspecting the engine bay might reveal your modified exhaust, as the header shape is noticeably different. In such cases, you're in trouble. Also, is the quality of your catalytic converter good? Knockoff brands might fail within a year, and emissions will definitely suffer. To be safe, either revert to stock or opt for a highly reputable brand, and test your emissions yourself before the inspection to be sure.
